BMW Z3
Workshop
CLASSIC BMW (RHD-UK)
Push-Start Switches
Useful Information
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Note: One recommends reading the diary first and then linking to workshop notes to maintain the continuity of the theme...
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A
(For Larger Final Diagram)>>>
Earth or Ground Strap
Press Starter Button
Relay
Car Ignition Switch
Power to Switches
inline Fuse
e.g. Fuel Pump
Starter Motor
Relay
B
C
Adding An Ignition Key, Push Start Using A Relay
Basic Push Start Without Relay
Output Max 20 Amps
Switch Capacity and Fuse Loading
Note: Switch Capacity and Fuse Loading
For higher rating of accessory add a relay per accessory, at this stage the fuse rate can be lowered (inline) to a 5 amp
+
- G
- G
- G
+
+
+
+
+
No More than 20 Amps
Pin 30 on Relay +
to Fuse - Blue wire
For higher load accessories:
The 3rd switch on the board controls the relay
Pin 87 is Yellow Wire + of e.g. Fuel Pump
Pin 86 is the White Wire + power's the relay from the switch
Pin 85 is the Black Wire - Ground
Y
Blu
BLK
W
To Starter Liver Terminal
+
+
+
+
+
+
-
-
+
+
+
+
Adding a High Capacity Accessory e.g. Fuel Pump Using a Relay
Courtesy of Wiring Rescue (Jeremy) YTube:
Diagram 'C' will be used on the Z3 (2024)
No Liability Do On test bed First
to 3
4 to Starter
To 3
To 3
4 to Starter Motor Solenoid
4
3
